Workflow

You can override any of the following workflow functions to customise behaviour:

process_{state}_to_{state}(obj)

Useful for executing custom logic when an instance transitions for the first time, e.g. emailing support@company.com

Parameters:

• obj – model instance

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process_on_{state}(obj)

This will be called even when the current state does not change - if you want fine grain control see process_{state}_to_{state}.

Parameters:

• obj – model instance

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all(obj)

Note. the only authentication hook for this is authenticate - it will be called on all state transitions.

Parameters:

• obj – model instance

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validate(view)

A decorated view with @transition can run validation checks before processing the state transition and flow logic. This is useful if you want to validate incoming POST data etc.

Parameters:

• view – view instance